US Bridges

County RD SW 1050 over Sac Rvr

Fair

St. Clair County, Missouri · S 21 T 36 N R 26 W · Structure no. 22756

Built
1999
26 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
271 ft
3 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

County RD SW 1050 over Sac Rvr is a prestressed concrete stringer/multi-beam or girder carrying County RD SW 1050 over Sac Rvr in St. Clair County, Missouri. It was built in 1999, so it is 26 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2043. The structure is 271 ft (82.6 m) long and 26 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesCounty RD SW 1050
CrossesSac Rvr
LocationS 21 T 36 N R 26 W
RouteCounty Highway 373
CountySt. Clair County
StateMissouri
Coordinates37.87, -93.80333
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.4 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length271 ft (82.6 m)
Longest span98 ft (29.9 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic120 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD SW 1050 over Sac Rvr built?

It was built in 1999, making it 26 years old in 2025.

What condition is County RD SW 1050 over Sac Rvr in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does County RD SW 1050 over Sac Rvr carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD SW 1050 over Sac Rvr?

The structure is 271 ft (82.6 m) long with a longest span of 98 ft (29.9 m) and a deck 26 ft wide.

Who owns County RD SW 1050 over Sac Rvr?

It is owned by the County Highway Agency.